[ncl-talk] missing value and index

[Jatin Kala]

ncl 0> A=(/1,12,3,14,5,26,7,18,9,10/)
ncl 1> B=(/1,3,5/)
ncl 2>  C=new(dimsizes(A),typeof(A))
ncl 3> C at _FillValue = -999
ncl 4> C(B) = A(B)
ncl 5> print(C)

Variable: C
Type: integer
Total Size: 40 bytes
             10 values
Number of Dimensions: 1
Dimensions and sizes:   [10]
Coordinates:
Number Of Attributes: 1
   _FillValue :  -999
(0)     -999
(1)     12
(2)     -999
(3)     14
(4)     -999
(5)     26
(6)     -999
(7)     -999
(8)     -999
(9)     -999

On 11/02/15 8:14 AM, Xi Chang wrote:
> Dear NCL,
>
> How can I change the values which are not associated with list of 
> index to be missing values, for instance let's say I have set of data 
> in array A, and list of index in array B,
> then I need to get array C where, the values of A which are not 
> associated with indices in B, will be missing values?
>
> A=(/1,12,3,14,5,26,7,18,9,10/) ;data
> B=(/1,3,5/) ;index
>
> then, the result will be:
>
> C=(/-999, 12, -999, 14,-999,26, -999, -999, -999, -999/)
>
> Thank you.
>
>
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